Display panel with scattering particles, display device, and manufacturing method of display panel

Abstract

The present invention provides a display panel, a display device, and a manufacturing method of a display panel. A side wall of a black matrix unit is arranged at an inclined angle, so light is more easily emitted from a black matrix, and a light emission angle is increased. Accordingly, a light transmittance and a viewing angle of an organic light-emitting diode (OLED) are increased. Therefore, the display performance of the OLED is effectively improved.

What is claimed is: 
     
       1. A display panel, comprising:
 a display plate; 
 an encapsulation layer disposed on the display plate; and 
 a color filter substrate disposed on the encapsulation layer, wherein the color filter substrate comprises a light shielding region, the light shielding region is provided with only one black matrix layer, the black matrix layer comprises a black matrix, the black matrix including a plurality of black matrix units, the black matrix units comprise side walls extending through a whole thickness of the black matrix layer, and the side walls of all the black matrix units in the black matrix are each arranged at an inclined angle, wherein each inclined angle is an angle between one of the side walls of the black matrix units and a vertical direction, an inclined groove is defined between each two adjacent black matrix units in the black matrix, a cross-section of each of the inclined grooves tapers in a downward direction, the inclined grooves are each filled with scattering particles, the scattering particles are colorless and transparent and are made of SiO 2  or TiO, and the inclined angles range from 10° to 45°. 
 
     
     
       2. The display panel according to  claim 1 , wherein a structure of each of the scattering particles has various shapes, and the shapes comprise a spherical shape and a regular polyhedral shape. 
     
     
       3. The display panel according to  claim 1 , wherein the inclined angles range from 10° to 20°. 
     
     
       4. A display device comprising a display panel, the display panel comprising:
 a display plate; 
 an encapsulation layer disposed on the display plate; and 
 a color filter substrate disposed on the encapsulation layer, wherein the color filter substrate comprises a light shielding region, the light shielding region is provided with only one black matrix layer, the black matrix layer comprises a black matrix, the black matrix including a plurality of black matrix units, the black matrix units comprise side walls extending through a whole thickness of the black matrix layer, and the side walls of all the black matrix units in the black matrix are each arranged at an inclined angle, wherein each inclined angle is an angle between one of the side walls of the black matrix units and a vertical direction, an inclined groove is defined between each two adjacent black matrix units in the black matrix, a cross-section of each of the inclined grooves tapers in a downward direction, the inclined grooves are each filled with scattering particles, the scattering particles are colorless and transparent and are made of SiO 2  or TiO, and the inclined angles range from 10° to 45°. 
 
     
     
       5. The display device according to  claim 4 , wherein a structure of each of the scattering particles has various shapes, and the shapes comprise a spherical shape and a regular polyhedral shape. 
     
     
       6. The display device according to  claim 4 , wherein the inclined angles range from 10° to 20°. 
     
     
       7. A manufacturing method of a display panel, comprising following steps:
 providing a display plate; 
 forming an encapsulation layer on the display plate; 
 forming only one black matrix layer on the encapsulation layer, wherein the black matrix layer comprises a black matrix, the black matrix comprises a plurality of black matrix units; and 
 processing side walls of all the black matrix units in the black matrix to obtain the black matrix units comprising side walls each arranged at an inclined angle and extending through a whole thickness of the black matrix layer, wherein each inclined angle is an angle between one of the side walls of the black matrix units and a vertical direction, an inclined groove is formed between each two adjacent black matrix units in the black matrix, a cross-section of each of the inclined grooves tapers in a downward direction, the inclined grooves are each filled with scattering particles, the scattering particles are colorless and transparent and are made of SiO 2  or TiO, and the inclined angles range from 10° to 45°. 
 
     
     
       8. The manufacturing method according to  claim 7 , further comprising:
 processing the side walls of all the black matrix units in the black matrix to obtain the black matrix units whose side walls are each arranged at the inclined angle, wherein the inclined angles range from 10° to 20°.